9 "Criminal Minds" Episodes That Are Based on Very Creepy True Stories

The two-part season four finale of "Criminal Minds" features a particularly weird and gruesome case . . . and it also happens to be one inspired by real life. The killers in "To Hell" are notable for disposing of their victims' bodies by feeding them to pigs, drawing inspiration from the "Pig Farmer Killer," Robert Pickton. In the disturbing nonfiction case, Pickton was eventually caught and claimed to have committed 49 murders over the course of his spree.